GB2450630B - Zoom lens - Google Patents

Zoom lens

Info

Publication number
GB2450630B
GB2450630B GB0811827A GB0811827A GB2450630B GB 2450630 B GB2450630 B GB 2450630B GB 0811827 A GB0811827 A GB 0811827A GB 0811827 A GB0811827 A GB 0811827A GB 2450630 B GB2450630 B GB 2450630B
Authority
GB
United Kingdom
Prior art keywords
zoom lens
zoom
lens
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
GB0811827A
Other versions
GB2450630A (en
GB0811827D0 (en
Inventor
Yasuhiro Kondo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Elmo Co Ltd
Original Assignee
Elmo Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Elmo Co Ltd filed Critical Elmo Co Ltd
Publication of GB0811827D0 publication Critical patent/GB0811827D0/en
Publication of GB2450630A publication Critical patent/GB2450630A/en
Application granted granted Critical
Publication of GB2450630B publication Critical patent/GB2450630B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G02B15/144—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having four groups only
    • G02B15/1441—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having four groups only the first group being positive
    • G02B15/144113—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having four groups only the first group being positive arranged +-++
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
  • Studio Devices (AREA)
GB0811827A 2007-06-29 2008-06-27 Zoom lens Expired - Fee Related GB2450630B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007171683A JP5129520B2 (en) 2007-06-29 2007-06-29 Zoom lens

Publications (3)

Publication Number Publication Date
GB0811827D0 GB0811827D0 (en) 2008-07-30
GB2450630A GB2450630A (en) 2008-12-31
GB2450630B true GB2450630B (en) 2010-07-21

Family

ID=39683289

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0811827A Expired - Fee Related GB2450630B (en) 2007-06-29 2008-06-27 Zoom lens

Country Status (3)

Country Link
US (1) US7933073B2 (en)
JP (1) JP5129520B2 (en)
GB (1) GB2450630B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5555129B2 (en) * 2010-10-21 2014-07-23 キヤノン株式会社 Zoom lens and imaging apparatus having the same
TWI463173B (en) 2013-07-25 2014-12-01 Young Optics Inc Zoom lens
JP6512226B2 (en) * 2014-12-26 2019-05-15 株式会社ニコン Variable power optical system and optical apparatus
CN111766687B (en) * 2020-09-03 2020-11-13 常州市瑞泰光电有限公司 Image pickup optical lens
CN113703131B (en) * 2021-07-19 2022-08-16 中国科学院福建物质结构研究所 Full-frame single-lens reflex lens

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06194572A (en) * 1992-12-24 1994-07-15 Minolta Camera Co Ltd Variable power lens
US5872658A (en) * 1996-02-06 1999-02-16 Minolta Co., Ltd. Zoom lens system
US6069743A (en) * 1998-03-24 2000-05-30 Olympus Optical Co., Ltd. Zoom lens system
US20030175021A1 (en) * 2002-01-25 2003-09-18 Hiroyuki Hamano Zoom lens, and camera incorporating such zoom lens

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS575012A (en) 1980-06-12 1982-01-11 Minolta Camera Co Ltd Four component zoom lens system
JPS5830709A (en) 1981-08-18 1983-02-23 Nippon Kogaku Kk <Nikon> Zoom lens system
JPH07107577B2 (en) 1986-07-24 1995-11-15 オリンパス光学工業株式会社 Zoom lenses
JP2738099B2 (en) * 1990-01-20 1998-04-08 キヤノン株式会社 Rear focus zoom lens
JP3392881B2 (en) 1991-11-13 2003-03-31 オリンパス光学工業株式会社 Zoom lens
JPH06324265A (en) 1993-05-11 1994-11-25 Hitachi Ltd Wide angle zoom lens
JP3352240B2 (en) * 1994-08-05 2002-12-03 キヤノン株式会社 High zoom ratio zoom lens
JPH1039213A (en) * 1996-07-26 1998-02-13 Canon Inc Rear focus type zoom lens
IT1288836B1 (en) 1996-11-19 1998-09-24 Cselt Centro Studi Lab Telecom ACTIVE SINGLE-MODE OPTICAL FIBERS AND PROCEDURE FOR THEIR REALIZATION
JP2001133687A (en) 1999-11-08 2001-05-18 Olympus Optical Co Ltd Zoom lens
US6931207B2 (en) * 2002-12-27 2005-08-16 Canon Kabushiki Kaisha Zoom lens system and camera having the same
JP4731834B2 (en) * 2004-06-04 2011-07-27 キヤノン株式会社 Zoom lens and imaging apparatus having the same
JP4764644B2 (en) * 2005-02-23 2011-09-07 株式会社リコー Zoom lens and information device
JP5015514B2 (en) * 2006-06-22 2012-08-29 株式会社リコー Zoom lens, imaging device, and portable information terminal device
US7599125B2 (en) * 2007-05-10 2009-10-06 Olympus Imaging Corp. Image pickup apparatus having wide angle zoom lens system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06194572A (en) * 1992-12-24 1994-07-15 Minolta Camera Co Ltd Variable power lens
US5872658A (en) * 1996-02-06 1999-02-16 Minolta Co., Ltd. Zoom lens system
US6069743A (en) * 1998-03-24 2000-05-30 Olympus Optical Co., Ltd. Zoom lens system
US20030175021A1 (en) * 2002-01-25 2003-09-18 Hiroyuki Hamano Zoom lens, and camera incorporating such zoom lens

Also Published As

Publication number Publication date
GB2450630A (en) 2008-12-31
GB0811827D0 (en) 2008-07-30
JP5129520B2 (en) 2013-01-30
US7933073B2 (en) 2011-04-26
JP2009008975A (en) 2009-01-15
US20090002843A1 (en) 2009-01-01

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20140627